镀锌产品气刀条痕缺陷的产生

当气刀喷嘴发生部分堵塞时，在带钢对应的位置会发生锌层超厚，构成带痕。When the air knife nozzle is partially blocked, the zinc layer will be super thick at the corresponding position of strip steel, forming strip marks.发生原因Cause of occurrence1、气刀角度、高度、距离调整不合理；两头喷嘴角度差错主要是负角度调整过大所发生，角度正值的一侧喷出的气流，将带钢边部剩余的锌液喷吹到负值一侧喷嘴内发生堵塞构成带痕。气刀高度过低且喷吹压大能使锌液飞溅，堵塞气刀构成带痕，气刀距离带钢过小且来料浪形、瓢曲、带钢受热不均、带钢张力过小等构成带钢刮气刀构成堵塞发生条痕。1. The adjustment of the angle, height and distance of air knife is unreasonable. The main reason for the angle error of the two nozzles is the excessive adjustment of the negative angle. The gas flow from the positive side of the angle sprays the remaining zinc liquid from the edge of strip steel into the nozzle on the negative side and blockages the nozzle to form a band mark. Low height and high injection pressure of air knife can make zinc liquid splash, blocking air knife to form strip marks, too small distance between air knife and strip steel, wave shape of incoming material, ladle bending, uneven heating of strip steel, too small tension of strip steel constitute strip steel scraper to form blocking strip marks.解决办法：合理调整气刀角度控制规划应在（-10°，20°），两头喷嘴角度差3°，操作可在现场依据气刀声音判别角度规划；在出产0.5mm~1.0mm的带钢气刀高度不易过低，可以通过喷嘴距带钢距离调整气刀压力，防止气刀距液面过低，喷吹过大，构成锌液飞溅，堵塞气刀；一旦发生堵塞使用专业工具进行处理，必要时需求进行泊车处理。Solution: Reasonable adjustment of air knife angle control planning should be (-10, 20), the angle difference between the two nozzles is 3 degrees, the operation can be based on the air knife sound discrimination angle planning; in the production of 0.5 mm~1.0 mm strip steel air knife height is not too low, can adjust the air knife pressure through the distance between the nozzle and the strip steel, prevent the air knife distance from too low liquid level, spray too large, forming zinc splash, blocking gas. Knife; Once blockage occurs, use professional tools to deal with, if necessary, parking treatment is required.

2、气刀压力，操作在设定输入压力值时；差错过大或输入差错瞬间气刀压力突增，构成锌液飞溅气刀堵塞发生条痕。气刀压力检测系统故障也能使压力突增，并且两头气刀压力发生较大的差错发生条痕。2. Air knife pressure, when the input pressure value is set in operation; when the error is large or the input error occurs, the air knife pressure increases sharply, forming a strip mark of zinc splash gas knife blockage. The failure of the air knife pressure detection system can also make the pressure increase sharply, and there are large errors in the air knife pressure at both ends.解决方法：操作工有必要认真仔细的输入压力数值，一旦出现输入差错及时调整数值，出现条痕应及时用专用工具清除；在供认气刀压力检测系统故障后及时通知相关专业处理必要时泊车处理。Solution: It is necessary for the operator to carefully input the pressure values. Once the input errors occur and the values are adjusted in time, the stripes should be removed by special tools in time. After admitting the faults of the air knife pressure detection system, the operator should inform the relevant specialists to deal with them when necessary.3、气刀压缩空气管道内存有杂质，在气刀喷腔内部构成堵塞，在带钢相应部位构成条痕，操作现场处理过程中无法运用专用刮具进行处理。3. There are impurities in the compressed air pipe of air knife, which form blockage in the air knife spray chamber and strip marks in the corresponding parts of strip steel. It is impossible to use special scraper to deal with them in the process of field operation.解决方法：如供认此问题，通知主控采纳泊车，将气刀离线，并通知相关专业对气刀进行拆开吹扫。Solution: If you admit this problem, inform the main control to adopt parking, take the air knife off-line, and inform the relevant professionals to take the air knife apart and sweep.以上内容是由当气刀喷嘴发生部分堵塞时，在带钢对应的位置会发生锌层超厚，构成带痕。When the air knife nozzle is partially blocked, the zinc layer will be super thick at the corresponding position of strip steel, forming strip marks.发生原因Cause of occurrence1、气刀角度、高度、距离调整不合理；两头喷嘴角度差错主要是负角度调整过大所发生，角度正值的一侧喷出的气流，将带钢边部剩余的锌液喷吹到负值一侧喷嘴内发生堵塞构成带痕。气刀高度过低且喷吹压大能使锌液飞溅，堵塞气刀构成带痕，气刀距离带钢过小且来料浪形、瓢曲、带钢受热不均、带钢张力过小等构成带钢刮气刀构成堵塞发生条痕。1. The adjustment of the angle, height and distance of air knife is unreasonable. The main reason for the angle error of the two nozzles is the excessive adjustment of the negative angle. The gas flow from the positive side of the angle sprays the remaining zinc liquid from the edge of strip steel into the nozzle on the negative side and blockages the nozzle to form a band mark. Low height and high injection pressure of air knife can make zinc liquid splash, blocking air knife to form strip marks, too small distance between air knife and strip steel, wave shape of incoming material, ladle bending, uneven heating of strip steel, too small tension of strip steel constitute strip steel scraper to form blocking strip marks.解决办法：合理调整气刀角度控制规划应在（-10°，20°），两头喷嘴角度差3°，操作可在现场依据气刀声音判别角度规划；在出产0.5mm~1.0mm的带钢气刀高度不易过低，可以通过喷嘴距带钢距离调整气刀压力，防止气刀距液面过低，喷吹过大，构成锌液飞溅，堵塞气刀；一旦发生堵塞使用专业工具进行处理，必要时需求进行泊车处理。Solution: Reasonable adjustment of air knife angle control planning should be (-10, 20), the angle difference between the two nozzles is 3 degrees, the operation can be based on the air knife sound discrimination angle planning; in the production of 0.5 mm~1.0 mm strip steel air knife height is not too low, can adjust the air knife pressure through the distance between the nozzle and the strip steel, prevent the air knife distance from too low liquid level, spray too large, forming zinc splash, blocking gas. Knife; Once blockage occurs, use professional tools to deal with, if necessary, parking treatment is required.2、气刀压力，操作在设定输入压力值时；差错过大或输入差错瞬间气刀压力突增，构成锌液飞溅气刀堵塞发生条痕。气刀压力检测系统故障也能使压力突增，并且两头气刀压力发生较大的差错发生条痕。2. Air knife pressure, when the input pressure value is set in operation; when the error is large or the input error occurs, the air knife pressure increases sharply, forming a strip mark of zinc splash gas knife blockage. The failure of the air knife pressure detection system can also make the pressure increase sharply, and there are large errors in the air knife pressure at both ends.解决方法：操作工有必要认真仔细的输入压力数值，一旦出现输入差错及时调整数值，出现条痕应及时用专用工具清除；在供认气刀压力检测系统故障后及时通知相关专业处理必要时泊车处理。Solution: It is necessary for the operator to carefully input the pressure values. Once the input errors occur and the values are adjusted in time, the stripes should be removed by special tools in time. After admitting the faults of the air knife pressure detection system, the operator should inform the relevant specialists to deal with them when necessary.3、气刀压缩空气管道内存有杂质，在气刀喷腔内部构成堵塞，在带钢相应部位构成条痕，操作现场处理过程中无法运用专用刮具进行处理。3. There are impurities in the compressed air pipe of air knife, which form blockage in the air knife spray chamber and strip marks in the corresponding parts of strip steel. It is impossible to use special scraper to deal with them in the process of field operation.解决方法：如供认此问题，通知主控采纳泊车，将气刀离线，并通知相关专业对气刀进行拆开吹扫。Solution: If you admit this problem, inform the main control to adopt parking, take the air knife off-line, and inform the relevant professionals to take the air knife apart and sweep.以上内容是由济南镀锌管友谊供应，更多的精彩请点击：http://www.jnxxjm.com咱们坚持诚信为本的运营大纲，欢迎您的协作!The above content is supplied by Jinan Galvanized Pipe Friendship, more wonderful click: http://www.jnxxjm.com, we adhere to the integrity-based operating outline, welcome your cooperation!